DoNow1.5.3.

When the space key is pressed, the bat flys to the dragon. 

When the "r" key is pressed, the bat and dragon do to their original location. 

When 1 is pressed, the bat turns around and flys away. 

When the costume changed 2 times, it made it look like the bat's winds were moving. As well as saying, "BOO!". 
I used a broadcast block, so when the bat had already flown to the dragon, the dragon would say "You scared me!". For the bat turning around and flying away, I just had the bat point in the direction of "-90" (same as turning left). Then, just copied the space key blocks under the "repeat 2", but instead of doing 97 steps, I did 145 steps.